noun (n)

• something that is lost(noun.possession)

  Example:
  The car was a total loss.
  Loss of livestock left the rancher bankrupt.
  

  source: wordnet30
• gradual decline in amount or activity(noun.process)

  Example:
  Weight loss.
  A serious loss of business.
  

  source: wordnet30
• the act of losing someone or something(noun.act)

  Example:
  Everyone expected him to win so his loss was a shock.
  

  source: wordnet30
• the disadvantage that results from losing something(noun.attribute)

  Example:
  His loss of credibility led to his resignation.
  

  Synonym:
  deprivation
  

  source: wordnet30
• the experience of losing a loved one(noun.event)

  Example:
  He sympathized on the loss of their grandfather.
  

  source: wordnet30
• the amount by which the cost of a business exceeds its revenue(noun.possession)

  Example:
  The company operated at a loss last year.
  

  Synonym:
  red, red ink
  Antonym:
  gain
  

  source: wordnet30
• military personnel lost by death or capture(noun.event)

  Synonym:
  personnel casualty
  

  source: wordnet30
• euphemistic expressions for death(noun.event)

  Synonym:
  departure, exit, expiration, going, passing, release
  

  source: wordnet30
• The act of losing; failure; destruction; privation; as, the loss of property; loss of money by gaming; loss of health or reputation.(noun)

  source: webster1913